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Patented. July 13, 1880.

".PETERS, PHOTOLITMOGRAFNER. WASHINGTON. D. C4

(No Model.)

` Stylographio Fountain Pen.

UNITED STATES PATENT CEETCEO CHARLES H. DOWNES AND CHARLES L. DOWNES, OFJERSEY CITY, N. J.

STYL-OGRAPHIC FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 229,980, dated July 13,1880.

Application led March 27, 1880. (No model.)

To all whom it may concern Be it known that we, CHARLEs H. DovvNEs andCHARLES L. DOWNES, both of Jersey City, in the county of Hudson andState of N ew Jersey, have invented certain new and useful lmprovementsin Stylographic Fountain-Pens; and we do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

. K Figure l is an enlarged diametrical section through a stylographicfountain-pen having our improvements applied to it. Figs. 2 and 3 showdetails ofthe air-tube highly magnified. Fig. 4. is an enlarged view ofa point-section, shoting a short air-tube with our transverse air-inletapplied to it. Fig. 5 is a section of part of the handle of Fig. 4.

Similar letters of reference indicate corresponding parts.

This invention relates to stylographic fount. ain-pens having air-tubescombined with them for admitting air to facilitate the iiow of ink fromthe writing-points during the act of writing.

The nature of our invention consists, first, in a transverse or side air-inlet tube combined with the main or central air-tube in such mannerthat, while air can be freely admitted into the ink-receptacle at orlnear the writingpoint, a very large amount of space is afforded forcontaining ink, said tube extending entirely ythrough the wall of thecase and having two endl bearings therein, as will be hereinafterexplained.

The invention consists, second, in combining with the upper or maintubular air-section and lower tubular needle-carrying section a shortindependent removable coupling-section having a much smaller bore thaneither of its terminal sections, for the purpose of excluding ink fromthe same.

In the annexed drawings, A designates the case or hollow pen-handle,which is designed to serve as a reservoir for writing-fluid. B is a cap,which is secured in any suitable manner at the upper end of the handleA. A' designates the point-section, which is screwed into the lower endof the handle A in the usual with a screw-threaded part, e, a collar,e', and Y a neck, e2, which latter receives tightly the upper end of atube, G, which serves as the guide and receptacle for the stem of theneedle J.

The tube G is held centrally in the section A by means of flanges n, oneor more of which is perforated at i to form outlets for air thatdescends through tubes E, F, and G during the act of writing.

Between the i'langes a scores or notches j are made to allow a free flowof ink to the writing-point. The small-bore tube F prevents ink fromworking its way into the air-tube E.

The tube E communicates with the external air by means of the shorttransverse tube P,

above referred to, which in Fig. l is represented as located between theupper end ofthe handle A and the point-section A.

ln Fig. 4 the transverse tube P communicates with the external airthrough one side of the point-section A', and the air-tube is arrangedwholly inside of this point-section and detachable with it from thehandle portion A. In this latter arrangement the entire space in portionA is left free for containing ink.

In Fig. l the air-tube occupies a part of the ink-space ofthe portion A,and this tube is not detachable from the latter with the pointsection.

We do not consider it necessary to close the transverse inlet P when thepen is not in use, althoughin the case of Fig. 1, where this tube Ppasses through the side of handle portion A, a narrow slide might beused for closing said inlet.

Air escapes from the section G into the pointsection through theaperture t', (shown in Figs. 1, 3, and 4.) l

It will be seen that the short tube P is perforated transversely, sothat when it is inserted through the Wall of the case A and uppersection of the air-tube it forms a communication between the interior ofthis air-tube and the external air. TnbeP is below the upper closed endof the air-tube E, Fig. 1, and is the means for holding this latter tubein its place.

Having described our invention, we claiml. In a stylographicfountain-pen, the longitudinally and transverselyperforated air-inlettube P, supported at both its ends by the wall of the case A, and passedthrough the cen- 'trally-arran ged air-tube. the latter being closed atits upper end, substantially as described.

2. In combination with the removable pointsection A of a stylographicfountain-pen and the centrally-arran ged air and needle-carrying tube G,the longitudinally and transversely perforated air-inlet tube l), asdescribed.

3. In a stylographie fountain-pen, the com- CHARLES H. DOWNES. CEAS. L..DOVVNES Witnesses:

JOHN C. HARING, GILBERT S. CLARK.

